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DOK-SUPPL*-VEH*30.2***-PR03-EN-P
Rexroth IndraControl VEH 30.2 Hand-Held Terminal
Gerät
Schellen für
Schirmkontaktierung
Netzkabel außerhalb
des Gerätes (geschirmt
oder ungeschirmt)
Fig.4-7:
Correct connection of a compact line filter within the device
If the line filter is placed outside the shielded housing, the device connection
line must be shielded from the line filter through to the shielded housing of
the device and the cable shield must be contacted on both ends. This pre‐
vents interference produced by the device from being transmitted externally
where it could penetrate other systems. It also prevents the penetration of in‐
terference signals back into connection wires that have already been filtered.
Netzfilter
Netzkabel
(ungeschirmt)
flächig kontaktiertes
Netzfilter
Fig.4-8:
Correct connection of a compact line filter outside the device
When connecting line filters, attention should first be paid to the frequency
ranges to be filtered. If frequencies in the MHz range are also to be filtered,
such a line filter must feature a metal housing. Line filters with plastic hous‐
ings are normally not suitable for this purpose.
Current-compensated chokes
Device manufacturers sometimes specify the use of current-compensating
chokes or the installation of ferrite loops in the power supply line. Many ex‐
amples of this can be found in motor lines that are fed by frequency inverters.
Such chokes (see
fig. 4-9 "Current flow of a current-compensating choke" on
page
46) suppress common-mode interference currents (I
operating currents (I
) to pass unhindered. Observe that the operating cur‐
B
rents in the core produce self-cancelling magnetic fields so that the operating
current does not saturate the ferrite cores. Such throttles must also be placed
at the inlet to the shielded housing of the device.
Bosch Rexroth AG
Netzfilter
L, N und PE - möglichst kurz!
Schirm ist in diesem Abschnitt erforderlich!
Schellen für
Schirm-
kontaktierung
L, N und PE -
Schirm ist in diesem
möglichst kurz!
Abschnitt erforderlich!
45/109
Technical Data
an das Gehäuse
flächig kontaktiertes
Netzfilter
Gerät
Schirmgehäuse
des Gerätes
) and allow the
S
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